test.js

var noble = require('noble');

noble.on('stateChange', function(state) {
	if (state === 'poweredOn') {
		noble.startScanning();
	} else {
		noble.stopScanning();
	}
});

noble.on('discover', function(peripheral) {
	console.log('peripheral discovered (' + peripheral.id +
		' with address <' + peripheral.address +  ', ' + peripheral.addressType + '>,' +
		' connectable ' + peripheral.connectable + ',' +
		' RSSI ' + peripheral.rssi + ':');
	console.log('\thello my local name is:');
	console.log('\t\t' + peripheral.advertisement.localName);
	console.log('\tcan I interest you in any of the following advertised services:');
	console.log('\t\t' + JSON.stringify(peripheral.advertisement.serviceUuids));

	var serviceData = peripheral.advertisement.serviceData;
	if (serviceData && serviceData.length) {
		console.log('\there is my service data:');
		for (var i in serviceData) {
			console.log('\t\t' + JSON.stringify(serviceData[i].uuid) + ': ' + JSON.stringify(serviceData[i].data.toString('hex')));
		}
	}
	if (peripheral.advertisement.manufacturerData) {
		console.log('\there is my manufacturer data:');
		console.log('\t\t' + JSON.stringify(peripheral.advertisement.manufacturerData.toString('hex')));
	}
	if (peripheral.advertisement.txPowerLevel !== undefined) {
		console.log('\tmy TX power level is:');
		console.log('\t\t' + peripheral.advertisement.txPowerLevel);
	}

	console.log();
});